cheapshot- Sounds like you're making progress
I too was gonna mention a dumpster but I worried that I'd sound like too much of a smart @$$
Whenever I've had a dumpster around, I always found a lot of stuff that I could do without and never miss.
For the racks/shelving, you might consider heavy-duty plastic ones (RubberMaid, etc.). They'd be on the floor, but still...
If you need something deeper than those shelves you could alway just have them two-deep.
I like plastic shelving more than metal because I can just hose/pressurewash them as necessary.